DiveNET: 5x5 is a high performance Single Side Band (SSB) through-water (wireless) diver voice communications system featuring superior signal reception, effective range of 1,000 meters and built-in support for diver tracking in a unified system. DiveNET: 5x5 features a compact, ruggedized topside station and a belt or tank mounted diver comm. unit. When coupled with the VoiceTrack option, four light-weight buoys can be deployed around the dive site to provide wireless real-time positioning of each diver transmission to a topside operator. With VoiceTrack, each press-release of the PTT switch automatically relays the diver's position to the surface. DiveNET: 5x5 is compatible with most common types of full face masks (FFM).